| aarch64 | SafeC Standard Library — std::simd, AArch64 convenience layer |
| cortex_m | SafeC Standard Library — std::simd, ARM Cortex-M convenience layer |
| cpu | SafeC Standard Library — which SIMD instruction sets the CPU runs. |
| cuda | SafeC Standard Library — std::simd, CUDA (NVPTX) convenience layer |
| gemm | SafeC Standard Library — single-precision matrix multiply on the CPU. |
| riscv | SafeC Standard Library — std::simd, RISC-V convenience layer |
| rocm | SafeC Standard Library — std::simd, ROCm (AMDGPU/GCN) convenience layer |
| simd | SafeC Standard Library — std::simd (portable core) |
| spirv | SafeC Standard Library — std::simd, SPIR-V convenience layer |
| vmath | |
| wasm | SafeC Standard Library — std::simd, WebAssembly convenience layer |
| x86_64 | SafeC Standard Library — std::simd, x86_64 convenience layer |